Portolan Capital Management, LLC Portfolio Holdings

Portolan Capital Management, LLC

  • $1.6 Billion
  • Q3 2025

Portolan Capital Management, LLC has filed its 13F form on November 13, 2025 for Q3 2025 where it was disclosed a total value porftolio of $1.6 Billion distributed in 119 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Modine Manufacturing CO with a value of $85.6M, Ttm Technologies Inc with a value of $68.5M, E.L.F. Beauty, Inc. with a value of $64.6M, Kratos Defense & Security Solutions, Inc. with a value of $54.5M, and Semtech Corp with a value of $47.8M.

Examining the 13F form we can see an increase of $213M in the current position value, from $1.38B to 1.6B.

Portolan Capital Management, LLC is based out at Boston, MA

Below you can find more details about Portolan Capital Management, LLC portfolio as well as his latest detailed transactions.

Portfolio value $1.6 Billion
Technology: $593 Million
Industrials: $291 Million
Consumer Cyclical: $247 Million
Healthcare: $168 Million
Communication Services: $110 Million
Consumer Defensive: $96.5 Million
Financial Services: $48.5 Million
Real Estate: $30.8 Million
Other: $12.2 Million

Stock Holdings Table

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$6.87B
$85.6 Million 5.36% of portfolio
602,462
Q3 2025 Added 22.37%
$6.95B
$68.5 Million 4.29% of portfolio
1,188,822
Q3 2025 Added 5.75%
$3.85B
$64.6 Million 4.04% of portfolio
487,525
Q3 2025 Added 4.43%
$9.12B
$54.5 Million 3.41% of portfolio
596,106
Q3 2025 Reduced 55.13%
$4.16B
$47.8 Million 2.99% of portfolio
668,862
Q3 2025 Added 76.47%
$7.28B
$46.6 Million 2.92% of portfolio
147,929
Q3 2025 Reduced 17.27%
$3.84B
$45 Million 2.82% of portfolio
148,245
Q3 2025 Reduced 13.08%
$3.5B
$44.8 Million 2.81% of portfolio
2,419,662
Q3 2025 Added 139.13%
$1.93B
$44.7 Million 2.8% of portfolio
3,612,811
Q3 2025 Reduced 11.59%
$383M
$42.5 Million 2.66% of portfolio
2,684,753
Q3 2025 Added 142.33%
$27.2B
$34.5 Million 2.16% of portfolio
595,786
Q3 2025 Added 23.97%
$880M
$34.5 Million 2.16% of portfolio
1,515,111
Q3 2025 Added 1.71%
$716M
$30 Million 1.88% of portfolio
2,174,001
Q3 2025 Added 46.15%
$404M
$26.4 Million 1.65% of portfolio
823,298
Q3 2025 Reduced 16.88%
$1.03B
$25.8 Million 1.61% of portfolio
1,534,303
Q3 2025 Reduced 37.19%
$225M
$25.5 Million 1.6% of portfolio
6,928,004
Q3 2025 Added 11.43%
$10.3B
$24.3 Million 1.52% of portfolio
131,989
Q3 2025 New
$660M
$24.1 Million 1.51% of portfolio
5,769,203
Q3 2025 Added 190.51%
$10.9B
$23.7 Million 1.48% of portfolio
327,305
Q3 2025 Added 198.55%
$1.54B
$23.2 Million 1.45% of portfolio
1,124,085
Q3 2025 Added 28.26%
$212M
$23.1 Million 1.45% of portfolio
4,259,851
Q3 2025 Added 17.23%
$1.38B
$22.8 Million 1.43% of portfolio
769,788
Q3 2025 New
$1.22B
$21.9 Million 1.37% of portfolio
796,627
Q3 2025 New
$583M
$21.7 Million 1.36% of portfolio
1,615,280
Q3 2025 Added 15.28%
$3.16B
$20.4 Million 1.28% of portfolio
1,025,195
Q3 2025 Reduced 22.08%
$6.28B
$20.5 Million 1.28% of portfolio
149,241
Q3 2025 Added 50.07%
$1.33B
$19.4 Million 1.21% of portfolio
195,804
Q3 2025 New
$27B
$18.3 Million 1.15% of portfolio
83,198
Q3 2025 New
$1.62B
$17.8 Million 1.12% of portfolio
646,088
Q3 2025 Reduced 31.94%
$1.53B
$17.5 Million 1.09% of portfolio
123,766
Q3 2025 Added 97.94%
$4.31B
$17.3 Million 1.08% of portfolio
226,669
Q3 2025 Reduced 33.6%
$7.2B
$17 Million 1.07% of portfolio
95,809
Q3 2025 New
$1.72B
$15.9 Million 0.99% of portfolio
405,860
Q3 2025 New
$828M
$15.3 Million 0.96% of portfolio
1,561,266
Q3 2025 Reduced 48.99%
$3.64B
$15.2 Million 0.95% of portfolio
297,208
Q3 2025 Added 16.79%
$3.57B
$14.6 Million 0.91% of portfolio
188,761
Q3 2025 Reduced 56.62%
$598M
$13.9 Million 0.87% of portfolio
546,219
Q3 2025 Added 19.96%
$13.3B
$13.9 Million 0.87% of portfolio
372,002
Q3 2025 Reduced 24.17%
$852M
$13.6 Million 0.85% of portfolio
933,532
Q3 2025 Added 48.19%
$7.71B
$13 Million 0.82% of portfolio
46,440
Q3 2025 Reduced 26.03%
$28.4B
$12.9 Million 0.81% of portfolio
88,786
Q3 2025 New
$2.38B
$12.9 Million 0.81% of portfolio
1,369,176
Q3 2025 Added 15.64%
$181M
$12.7 Million 0.8% of portfolio
1,631,622
Q3 2025 New
$335M
$12.4 Million 0.78% of portfolio
745,802
Q3 2025 Added 115.82%
$326M
$11.4 Million 0.71% of portfolio
2,182,925
Q3 2025 New
$39.1B
$11.3 Million 0.71% of portfolio
43,611
Q3 2025 Reduced 0.11%
$4.02B
$11.3 Million 0.7% of portfolio
97,817
Q3 2025 Reduced 0.12%
$558M
$11 Million 0.69% of portfolio
1,179,000
Q3 2025 Added 62.04%
$15.1B
$10.5 Million 0.66% of portfolio
28,770
Q3 2025 Added 48.18%

Summary

  • Portfolio
  • No. of Stocks 119
  • Current Value $1.6 Billion
  • Prior Value $1.38 Billion
  • Filing
  • Period Q3 2025
  • Filing Date November 13, 2025
  • Form Type 13F-HR
  • Activity in Q3 2025
  • New Purchases 41 stocks
  • Additional Purchases 35 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 42 stocks
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